Cryptography & Firewalls Explained | Symmetric vs Asymmetric Keys, Packet Filtering, Proxy | English

[ENGLISH] 🔒 Network Security Fundamentals | Cryptography & Firewalls | Cybersecurity Basics Build a strong foundation in network security with this comprehensive guide! Perfect for GATE, UGC NET, CCNA Security, and IT/cybersecurity professionals, this video covers cryptography and firewall concepts crucial for protecting data and networks. ✅ What You’ll Learn: Cryptography Fundamentals: Difference between plain text and cipher text, and how encryption ensures confidentiality (the 'C' in the CIA triad) Symmetric Key Cryptography: How DES, 3DES, and AES use a single shared key, and the challenge of secure key exchange Asymmetric Key Cryptography: Public & private key mechanisms, the rule of using the receiver's public key for encryption, and an introduction to RSA Firewalls: Their role as network barriers, and the difference between host-based and network-based firewalls Types of Firewalls: Packet Filtering Firewalls (Layers 3 & 4): Analyze IP addresses and ports Proxy Firewalls / Application Gateways: Use Deep Packet Inspection (DPI) at Layer 5 for advanced threat detection 🎯 Perfect For: Cybersecurity & IT students Network security professionals Anyone preparing for certifications, exams, or interviews in cybersecurity 📌 Why Watch This Video? Clear, easy-to-understand explanations Real-world examples of cryptography and firewall usage Strengthens your exam, interview, and practical cybersecurity knowledge #NetworkSecurity #Cryptography #Firewalls #Cybersecurity #GATE #UGCNET #CCNASecurity #DataProtection #ComputerNetworks #InformationSecurity